Mercurial > cpython-lru_cache-weakref

diff Python/ceval.c @ 51759:0848ebb8f9c8 legacy-trunk

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Issue 5176: special-case string formatting in BINARY_MODULO implementation. This shows a modest (1-3%) speed-up in templating systems, for example.
author Collin Winter <collinw@gmail.com>
date Fri, 20 Feb 2009 19:30:41 +0000
parents 994fe4df4af7
children ef8fe9088696
line wrap: on
line diff
--- a/Python/ceval.c	Fri Feb 20 14:02:36 2009 +0000
+++ b/Python/ceval.c	Fri Feb 20 19:30:41 2009 +0000
@@ -1283,7 +1283,10 @@
 		case BINARY_MODULO:
 			w = POP();
 			v = TOP();
-			x = PyNumber_Remainder(v, w);
+			if (PyString_CheckExact(v))
+				x = PyString_Format(v, w);
+			else
+				x = PyNumber_Remainder(v, w);
 			Py_DECREF(v);
 			Py_DECREF(w);
 			SET_TOP(x);